Portable telephone
First Claim
1. A cellular phone comprising:
- an antenna for mainly sending and receiving radio waves for communication with a base station,a printed-circuit board having a metal surface as a board ground layer for the antenna and electronic components mounted thereon,a feeder for supplying electric power to said antenna and said metal surface,a magnetic plate made of a magnetic material for intensifying a radio wave in a free space during a talk, andan outer case housing therein said printed-circuit board, said feeder, and said magnetic plate, whereinsaid printed-circuit board is a multilayered structure; and
said magnetic plate is embedded partly or entirely between layers of said printed-circuit board spaced from said board ground layer and opposite to a side of the printed-circuit board where said antenna is located.
2 Assignments
0 Petitions
Accused Products
Abstract
A low-profile cellular phone has improved radiation efficiency during a call for higher communication quality, and is of a structure allowing the cellular phone to be of a lower profile than heretofore with the magnetic plate and awkward structures such as its fixing jigs being not disposed in a gap within an outer case of the cellular phone.
A cellular phone includes at least an antenna for mainly sending and receiving radio waves for communication with a base-station, a printed-circuit board having a metal surface as a board ground layer for the antenna and electronic components mounted thereon, a feeder for supplying electric power to the antenna and the metal surface, a magnetic plate made of a magnetic material housed in an outer case for intensifying a radio wave in a free space during a talk, and an outer case housing therein the printed-circuit board, the feeder, and the magnetic plate. The cellular phone is arranged such that the printed-circuit board is of a multilayered structure, and the magnetic plate is embedded partly or entirely between inner layers of the printed-circuit board spaced from the board ground layer and opposite to a side of the printed-circuit board spaced where the antenna is located.
10 Citations
11 Claims
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1. A cellular phone comprising:
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an antenna for mainly sending and receiving radio waves for communication with a base station, a printed-circuit board having a metal surface as a board ground layer for the antenna and electronic components mounted thereon, a feeder for supplying electric power to said antenna and said metal surface, a magnetic plate made of a magnetic material for intensifying a radio wave in a free space during a talk, and an outer case housing therein said printed-circuit board, said feeder, and said magnetic plate, wherein said printed-circuit board is a multilayered structure; and said magnetic plate is embedded partly or entirely between layers of said printed-circuit board spaced from said board ground layer and opposite to a side of the printed-circuit board where said antenna is located. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 11)
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10. A cellular phone comprising:
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an antenna for mainly sending and receiving radio waves for communication with a base station, a printed-circuit board having a metal surface as a board ground layer for the antenna and electronic components mounted thereon, a feeder for supplying electric power to said antenna and said metal surface, a magnetic plate made of a magnetic material for intensifying a radio wave in a free space during a talk, and an outer case housing therein said printed-circuit board, said feeder, and said magnetic plate, wherein said magnetic plate is of a double-layer structure having an auxiliary metal plate lined on a side of said magnetic plate opposite to a face thereof which confronts said antenna.
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Specification